// jQuery Alert Dialogs Plugin
//
// Version 1.1
//
// Cory S.N. LaViska
// A Beautiful Site (http://abeautifulsite.net/)
// 14 May 2009
//
// Visit http://abeautifulsite.net/notebook/87 for more information
//
// Usage:
//		jAlert( message, [title, callback] )
//		jConfirm( message, [title, callback] )
//		jPrompt( message, [value, title, callback] )
// 
// History:
//
//		1.00 - Released (29 December 2008)
//
//		1.01 - Fixed bug where unbinding would destroy all resize events
//
// License:
// 
// This plugin is dual-licensed under the GNU General Public License and the MIT License and
// is copyright 2008 A Beautiful Site, LLC. 
//
(function ($) {
    /*
     * 遮罩层
     */
    var Shade = new function () {
        var handle = {};
        var shade;
        handle.show = function (func) {
            if (!shade) {
                shade = document.createElement('div');
                shade.style.display = 'none';
                shade.style.zIndex = 99997;
                shade.style.filter = 'alpha(opacity = 20)';
                shade.style.left = 0;
                shade.style.width = '100%';
                shade.style.position = 'absolute';
                shade.style.top = 0;
                shade.style.backgroundColor = '#989898';
                shade.style.opacity = .2;
                document.body.appendChild(shade);
            }
            with ((document.compatMode == 'CSS1Compat') ? document.documentElement : document.body) {
                var ch = clientHeight, sh = scrollHeight;
                shade.style.height = (sh > ch ? sh : ch) + 'px';

                var cw = clientWidth, sw = scrollWidth, ow = offsetWidth;
                var width = cw > sw ? cw : sw;
                width = width > ow ? width : ow;

                shade.style.width = width + 'px';
                shade.style.display = 'block';
            }

            if (func) {
                func();
            }
        };
        handle.hide = function (func) {
            shade.style.display = 'none';
            if (func) {
                func();
            }
        };

        return handle;
    }

    $.alerts = {

        // These properties can be read/written by accessing $.alerts.propertyName from your scripts at any time

        verticalOffset: -75,                // vertical offset of the dialog from center screen, in pixels
        horizontalOffset: 0,                // horizontal offset of the dialog from center screen, in pixels/
        repositionOnResize: true,           // re-centers the dialog on window resize
        overlayOpacity: .01,                // transparency level of overlay
        overlayColor: '#89652b',               // base color of overlay
        draggable: true,                    // make the dialogs draggable (requires UI Draggables plugin)
        okButton: '&nbsp;确定&nbsp;',         // text for the OK button
        cancelButton: '&nbsp;取消&nbsp;', // text for the Cancel button
        dialogClass: null,                  // if specified, this class will be applied to all dialogs

        // Public methods

        alert: function (message, title, callback) {
            if (title == null) title = '提示信息';
            $.alerts._show(title, message, null, 'alert', function (result) {
                if (callback) callback(result);
            });
        },

        confirm: function (message, title, callback) {
            if (title == null) title = '确认信息';
            $.alerts._show(title, message, null, 'confirm', function (result) {
                if (callback) callback(result);
            });
        },

        prompt: function (message, value, title, callback) {
            if (title == null) title = '输入信息';
            $.alerts._show(title, message, value, 'prompt', function (result) {
                if (callback) callback(result);
            });
        },

        // Private methods

        _show: function (title, msg, value, type, callback) {
            Shade.show();
            $.alerts._hide();
            $.alerts._overlay('show');

            $("BODY").append(
                '<div id="popup_container" class="window">' +
                '<div class="titlehead"><h3 id="popup_title"></h3></div>' +
                '<div id="popup_content" class="content">' +
                '<div id="popup_message"></div>' +
                '</div>' +
                '</div>');

            if ($.alerts.dialogClass) $("#popup_container").addClass($.alerts.dialogClass);

            // IE6 Fix
            var pos = ($.browser.msie && parseInt($.browser.version) <= 6) ? 'absolute' : 'fixed';

            $("#popup_container").css({
                position: pos,
                zIndex: 100000,
                padding: 0,
                margin: 0
            });

            if ($.browser.msie && $.browser.version < 7) {
                $ie6Fix = $('<iframe frameborder="0" src="#" id="shadow"></iframe>').css({
                    position: "absolute",
                    zIndex: 99999
                }).insertBefore("#popup_container")
            }

            $("#popup_title").text(title);
            $("#popup_content").addClass(type);
            $("#popup_message").text(msg);
            $("#popup_message").html($("#popup_message").text().replace(/\n/g, '<br />'));

            $("#popup_container").css({
                minWidth: $("#popup_container").outerWidth(),
                maxWidth: $("#popup_container").outerWidth()
            });

            $.alerts._reposition();
            $.alerts._maintainPosition(true);

            switch (type) {
                case 'alert':
                    $("#popup_message").after('<div id="popup_panel"><input type="button" value="' + $.alerts.okButton + '" id="popup_ok" class="submit1" /></div>');
                    $("#popup_ok").click(function () {
                        $.alerts._hide();
                        Shade.hide();
                        callback(true);
                    });
                    $("#popup_ok").focus().keypress(function (e) {
                        if (e.keyCode == 13 || e.keyCode == 27) $("#popup_ok").trigger('click');
                    });
                    break;
                case 'confirm':
                    $("#popup_message").after('<div id="popup_panel"><input type="button" value="' + $.alerts.okButton + '" id="popup_ok" class="submit1"/> <input type="button" value="' + $.alerts.cancelButton + '" id="popup_cancel" class="submit1"/></div>');
                    $("#popup_ok").click(function () {
                        $.alerts._hide();
                        Shade.hide();
                        if (callback) callback(true);
                    });
                    $("#popup_cancel").click(function () {
                        $.alerts._hide();
                        Shade.hide();
                        if (callback) callback(false);
                    });
                    $("#popup_ok").focus();
                    $("#popup_ok, #popup_cancel").keypress(function (e) {
                        if (e.keyCode == 13) $("#popup_ok").trigger('click');
                        if (e.keyCode == 27) $("#popup_cancel").trigger('click');
                    });
                    break;
                case 'prompt':
                    $("#popup_message").append('<br /><input type="text" size="30" id="popup_prompt" />').after('<div id="popup_panel"><input type="button" value="' + $.alerts.okButton + '" id="popup_ok" class="submit1"/> <input type="button" value="' + $.alerts.cancelButton + '" id="popup_cancel" class="submit1"/></div>');
                    $("#popup_prompt").width($("#popup_message").width());
                    $("#popup_ok").click(function () {
                        var val = $("#popup_prompt").val();
                        $.alerts._hide();
                        Shade.hide();
                        if (callback) callback(val);
                    });
                    $("#popup_cancel").click(function () {
                        $.alerts._hide();
                        Shade.hide();
                        if (callback) callback(null);
                    });
                    $("#popup_prompt, #popup_ok, #popup_cancel").keypress(function (e) {
                        if (e.keyCode == 13) $("#popup_ok").trigger('click');
                        if (e.keyCode == 27) $("#popup_cancel").trigger('click');
                    });
                    if (value) $("#popup_prompt").val(value);
                    $("#popup_prompt").focus().select();
                    break;
            }

            // Make draggable
            if ($.alerts.draggable) {
                try {
                    $("#popup_container").draggable({handle: $("#popup_title")});
                    $("#popup_title").css({cursor: 'move'});
                } catch (e) { /* requires jQuery UI draggables */
                }
            }
        },


        _showNew: function (showX, showP, width_m, title, msg, value, type, callback) {
            Shade.show();
            $.alerts._hide();
            $.alerts._overlay('show');

            if (showX == 1) {
                titlehead = '<div class="titlehead"><h3 id="popup_title"></h3><span id="titlehead_x" class="sd_close"></span></div>';
            } else {
                titlehead = '<div class="titlehead"><h3 id="popup_title"></h3></div>';
            }

            if (width_m == null) {
                width_m = $("#popup_container").outerWidth();
            }

            if (showP == 1) {
                sd_img = '<div class="sd_img"></div>';
            } else {
                sd_img = '';
            }

            $("BODY").append(
                '<div id="popup_container" class="window sd_window">' +
                titlehead +
                '<div id="popup_content" class="content">' +
                '<div class="dig_content">' +
                sd_img +
                '<div id="popup_message" class="popup_message">' +
                //'<div id="popup_message"></div>' +
                '</div>' +
                '</div>' +
                '</div>' +
                '</div>');

            if ($.alerts.dialogClass) $("#popup_container").addClass($.alerts.dialogClass);

            // IE6 Fix
            var pos = ($.browser.msie && parseInt($.browser.version) <= 6) ? 'absolute' : 'fixed';

            $("#popup_container").css({
                position: pos,
                zIndex: 100000,
                margin: 0
            });

            if ($.browser.msie && $.browser.version < 7) {
                $ie6Fix = $('<iframe frameborder="0" src="#" id="shadow"></iframe>').css({
                    position: "absolute",
                    zIndex: 99999
                }).insertBefore("#popup_container")
            }

            $("#popup_title").text(title);
            $("#popup_content").addClass(type);
            /*if(msg!=null){
                $("#popup_message").text(msg);
            }*/
            $("#popup_message").text(msg);
            $("#popup_message").html($("#popup_message").text().replace(/\n/g, '<br />'));

            $("#popup_container").css({
                minWidth: width_m,
                maxWidth: width_m
            });

            $.alerts._reposition();
            $.alerts._maintainPosition(true);

            switch (type) {
                case 'alert':
                    $("#titlehead_x").click(function () {
                        $.alerts._hide();
                        Shade.hide();
                        if (callback) callback(true);
                    });
                    $("#popup_message").after('<div id="popup_panel"><input type="button" value="' + $.alerts.okButton + '" id="popup_ok" class="sd_btn" /></div>');
                    $("#popup_ok").click(function () {
                        $.alerts._hide();
                        Shade.hide();
                        if (callback) callback(true);
                    });
                    $("#popup_ok").focus().keypress(function (e) {
                        if (e.keyCode == 13 || e.keyCode == 27) $("#popup_ok").trigger('click');
                    });
                    break;
                case 'confirm':
                    $("#titlehead_x").click(function () {
                        $.alerts._hide();
                        Shade.hide();
                        top.location.reload();
                    });
                    $("#popup_message").after('<div id="popup_panel"><input type="button" value="' + $.alerts.okButton + '" id="popup_ok" class="sd_btn sd_floatleft"/> <input type="button" value="' + $.alerts.cancelButton + '" id="popup_cancel" class="sd_btn1 sd_floatleft"/></div>');
                    $("#popup_ok").click(function () {
                        $.alerts._hide();
                        Shade.hide();
                        if (callback) callback(true);
                    });
                    $("#popup_cancel").click(function () {
                        $.alerts._hide();
                        Shade.hide();
                        top.location.reload();
                    });
                    $("#popup_ok").focus();
                    $("#popup_ok, #popup_cancel").keypress(function (e) {
                        if (e.keyCode == 13) $("#popup_ok").trigger('click');
                        if (e.keyCode == 27) $("#popup_cancel").trigger('click');
                    });
                    break;
            }

            // Make draggable
            if ($.alerts.draggable) {
                try {
                    $("#popup_container").draggable({handle: $("#popup_title")});
                    $("#popup_title").css({cursor: 'move'});
                } catch (e) { /* requires jQuery UI draggables */
                }
            }
        },

        _hide: function () {
            if ($.browser.msie && $.browser.version < 7) {
                $("#shadow").remove();
            }
            $("#popup_container").remove();
            $.alerts._overlay('hide');
            $.alerts._maintainPosition(false);
        },

        _overlay: function (status) {
            switch (status) {
                case 'show':
                    $.alerts._overlay('hide');
                    $("BODY").append('<div id="popup_overlay"></div>');
                    $("#popup_overlay").css({
                        position: 'absolute',
                        zIndex: 99998,
                        top: '0px',
                        left: '0px',
                        width: '100%',
                        height: $(document).height(),
                        background: $.alerts.overlayColor,
                        opacity: $.alerts.overlayOpacity
                    });
                    break;
                case 'hide':
                    $("#popup_overlay").remove();
                    break;
            }
        },

        _reposition: function () {
            var top = (($(window).height() / 2) - ($("#popup_container").outerHeight() / 2)) + $.alerts.verticalOffset;
            var left = (($(window).width() / 2) - ($("#popup_container").outerWidth() / 2)) + $.alerts.horizontalOffset;
            var height = $("#popup_container").outerHeight(true);
            var width = $("#popup_container").outerWidth(true);
            if (top < 0) top = 0;
            if (left < 0) left = 0;

            // IE6 fix
            if ($.browser.msie && parseInt($.browser.version) <= 6) top = top + $(window).scrollTop();

            $("#popup_container").css({
                top: top + 'px',
                left: left + 'px'
            });
            $("#popup_overlay").height($(document).height());
            $("#shadow").css({
                top: top + 'px',
                left: left + 'px',
                height: height + 34 + 'px',
                width: width + 'px'
            });
        },

        _maintainPosition: function (status) {
            if ($.alerts.repositionOnResize) {
                switch (status) {
                    case true:
                        $(window).bind('resize', $.alerts._reposition);
                        break;
                    case false:
                        $(window).unbind('resize', $.alerts._reposition);
                        break;
                }
            }
        }

    }

    // Shortuct functions
    jAlert = function (message, title, callback) {
        $.alerts.alert(message, title, callback);
    }

    jConfirm = function (message, title, callback) {
        $.alerts.confirm(message, title, callback);
    };

    jPrompt = function (message, value, title, callback) {
        $.alerts.prompt(message, value, title, callback);
    };

    jAlertNew = function (showX, showP, width, message, title, callback) {
        if (title == null) title = '提示信息';
        $.alerts._showNew(showX, showP, width, title, message, null, 'alert', function (result) {
            if (callback) callback(result);
        });
    }

    jConfirmNew = function (showX, showP, width, message, title, callback) {
        if (title == null) title = '提示信息';
        $.alerts._showNew(showX, showP, width, title, message, null, 'confirm', function (result) {
            if (callback) callback(result);
        });
    };

})(jQuery);